stonewalling (Noun) — Stalling or delaying especially by refusing to answer questions or cooperate.
stonewalling (Verb) — Obstruct or hinder any discussion. ex. "Nixon stonewalled the Watergate investigation" ex. "When she doesn't like to face a problem, she simply stonewalls"
stonewalling (Verb) — Engage in delaying tactics or refuse to cooperate. ex. "The President stonewalled when he realized the plot was being uncovered by a journalist"